Systems, devices and methods for cardiopulmonary treatment...

A - Human Necessities – 61 – M

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A61M 1/14 (2006.01) A61M 1/10 (2006.01) A61M 1/36 (2006.01)

Patent

CA 2703540

A cardiopulmonary bypass system utilizing membrane-based reciprocating positive displacement blood pumps ("pod pumps"). In one aspect, the pod pumps are constructed to provide reduced shear forces on the blood being pumped. In another aspect blood flow through the pod pumps can be controlled by a controller using information from pressure sensors in the control chamber of the pod pumps. In another aspect, the pod pumps are included on a disposable unit that can be received and held by a receptacle means on a base unit, the base unit also providing pressurized control fluid to the pod pumps on the disposable unit through the receptacle means.

L'invention concerne un système de contournement cardio-pulmonaire utilisant des pompes à sang à déplacement positif alternatif à base de membrane (= pompes pod =). Dans un aspect, les pompes pod sont construites de manière à fournir des forces de cisaillement réduites sur le sang qui est pompé. Dans un autre aspect, la circulation du sang à travers les pompes pod peut être régulée par un régulateur à l'aide d'informations provenant de capteurs de pression dans la chambre de commande des pompes pod. Dans un autre aspect, les pompes pod sont incluses sur une unité jetable qui peut être reçue et maintenue par un moyen formant réceptacle sur une unité de base, l'unité de base fournissant également un fluide de commande pressurisé aux pompes pod sur l'unité jetable, par l'intermédiaire du moyen formant réceptacle.

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